. >> reporter: president obama signed an executive order last week permitting intelligence agencies to share classified threat data with targeted companies. and calling for voluntary standards to protect vital sectors. banking, the power grid, transportation from attacks. many from china. congress refused to pass legislation last year to improve cyber defenses. republicans objected to new regulations and civil liberties groups worried about privacy. how vulnerable is america? only today the state department is investigating whether one of its associated websites was hacked last night by the activist group known as "anonymous." the attorney general today quoted cyber security experts as saying america now has two types of companies. those who know they have been hacked and those who don't know it yet. brian? >> andrea mitchell in our d.c. newsroom tonight, thanks. >>> the great american city of kansas city was rocked to its core last night. a huge explosion at a popular restaurant, well-known locally and to business travelers. one person has been found dead. the search for more possible